// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_ZYGOTE_HOST_ZYGOTE_HOST_IMPL_LINUX_H_
#define CONTENT_BROWSER_ZYGOTE_HOST_ZYGOTE_HOST_IMPL_LINUX_H_

#include <sys/types.h>

#include <set>
#include <string>

#include "base/command_line.h"
#include "base/files/scoped_file.h"
#include "base/process/process_handle.h"
#include "base/synchronization/lock.h"
#include "content/public/browser/zygote_host_linux.h"

namespace base {
template <typename Type>
struct DefaultSingletonTraits;
} // namespace base

namespace content {

class CONTENT_EXPORT ZygoteHostImpl : public ZygoteHost {
public:
    // Returns the singleton instance.
    static ZygoteHostImpl* GetInstance();

    void Init(const base::CommandLine& cmd_line);

    // Returns whether or not this pid is the pid of a zygote.
    bool IsZygotePid(pid_t pid) override;

    void SetRendererSandboxStatus(int status);
    int GetRendererSandboxStatus() const override;

    pid_t LaunchZygote(base::CommandLine* cmd_line, base::ScopedFD* control_fd);
    void AdjustRendererOOMScore(base::ProcessHandle process_handle,
        int score) override;

private:
    friend struct base::DefaultSingletonTraits<ZygoteHostImpl>;

    ZygoteHostImpl();
    ~ZygoteHostImpl() override;

    // Tells the ZygoteHost the PIDs of all the zygotes.
    void AddZygotePid(pid_t pid);

    int renderer_sandbox_status_;

    bool use_namespace_sandbox_;
    bool use_suid_sandbox_;
    bool use_suid_sandbox_for_adj_oom_score_;
    std::string sandbox_binary_;

    // This lock protects the |zygote_pids_| set.
    base::Lock zygote_pids_lock_;
    // This is a set of PIDs representing all the running zygotes.
    std::set<pid_t> zygote_pids_;
};

} // namespace content

#endif // CONTENT_BROWSER_ZYGOTE_HOST_ZYGOTE_HOST_IMPL_LINUX_H_
